Donald Trump wants to know who leaked details about the missing U.S. airman who was rescued from the mountains of Iran in a high-stakes mission on Sunday.

The U.S. carried out a daring operation to extract two airmen who ejected from the F-15E fighter jet that was shot down by Iranian forces on Friday. The military plucked the pilot out of Iranian territory on Friday, and later pulled out the second service member who was hiding in the mountains.

But during a press conference on Monday, Trump accused a media organization of jeopardizing the mission for reporting that a second airman was missing on Friday. He did not name the media organization, but threatened to jail the journalist who first reported that a second airman was missing.